[=Shall load fine coal.=] He shall not place in the gob or refuse
pile, or cover up, any fine coal or coal dust, but shall load same
into cars. (Sec. 944; Penalty, Sec. 976.)


Sec. 957. [=Duties of machine men.=] Machine runners and helpers
shall use care while operating mining machines. They shall not
operate a machine unless the shields are in place, and shall warn
persons not engaged in the operating of a machine of the danger in
going near the machine while it is in operation, and shall not
permit such persons to remain near the machine while it is in
operation. They shall examine the roof of the working place and see
that it is safe before starting to operate the machine. They shall
not move the machine while the cutter chain is in motion. When
connecting the power cable to the electric wires, they shall make
the negative or grounded connections before connecting to the
positive, and when disconnecting the power cable, shall disconnect
from the positive line before disconnecting the negative or
grounded. When positive feed wires extend into rooms, they shall
connect such wires to the positive wire on the entry before
connecting the power cable, and as soon as the power cable is
disconnected shall disconnect such wire from the wire on the entry.
They shall use care that the cable does not make contact with
metallic rails of the track, and shall avoid, where possible,
leaving the cable in water. If they remove props which have been
placed by the miner for the security of the roof, they shall reset
such props as promptly as possible. (Sec. 941; Penalty, Sec. 976.)